Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57d4db80f6c4c67fe820091b4938615edb1148e218fa9a03da260dadf425f0c4' 
  AND token = 'TNacyNYUj3BnroAN+xuGWU1t1NeT7werszyDexDWkpw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}